There is a clear reason why Tobi isn't killed: She's a main character.

Just kidding, there is 2 more for spare! Kill her already.

Levin looks quite happy that he's not being filled with bullets

well we must all be psychic we all saw that coming

The GM of this pace is a right old meanie. That was a seriously nasty stunt.

Last panel seems like the most honest expression we’ve seen from that guy yet.

Ah, so that's why shooting the button would not work.

Yay for pragmatism.

This is what happens when no one else knows their math.

Poor Tobi, I think Lorg is finally getting to her. No 'I trust you' no 'You have no good reason to kill me' just 'Bitch, you still need me.'

I mean, it's probably not the WRONG answer, but still...

I think the correct answer for this room is to get all three people to go the button. Ms. Beast throws that off a bit but unless one can comfortably defeat both of the others in close quarters combat it is probably the best way.

Also I think Tobi is the correct choice for another reason. Beside being probably/possibly the most useful, she is also the least likely to turn on the others and therefore the last you would kill for 'safety'. We know that and I think the others have seen enough to know that as well.

Plus Tobi is surely now the only one to get the fifth keypad entry for the orb...

Oh, so you two had plans to shoot the other but when the midget does it, you play nice. Whatever happened to equality?

@Harosata: The Beast Woman -seriously- considered, or at least considered -aloud-, shooting the midget. And it was pretty clear they were both 'considering' it with their planning, possibly to the point of bragging about their plans when the other was on the tiled floor.

After ten seconds: "The door will open as soon as the person holding the button is dead."

@Cluedrew
We certainly think that Tobi is the least likely to kill everyone, but do they? Tobi has spotted some seriously obscure stuff. She is honestly looking like she is doing a very bad job of trying to look invaluable when she is actually an enemy agent working for the game. Then we have her general mysteriousness and the fact she is considered a cleaner with that stature. She doesn't "look" dangerous so she must be extra dangerous to make up for it. They also know nothing of her motives and tendencies. Levin is apparently famous and Bess is obviously a half-crazed monster. These can be predicted, but Tobi? How are you supposed to predict when "she" will turn on you?

I very much doubt that Tobi looks like the safe option...

@Guest: I hadn't considered the plant option, but honestly... she looks like she doesn't want to be here. She has visible injuries for example. Sounds like a gifted individual who pushed their luck and is now dealing with the consequences. Is that a trick? Maybe, but so far she looks like she just wants to get through the game. (And I think she does, I believe what she wants is the exit prize.)

As for extra dangerous because she doesn't appear dangerous: Most dangerous things want you to know they are dangerous. Take Three for instance, I think there is a reason his "battle mode" is him practically sprouting blades.

If Tobi completes this challenge, she would be the 10 second Raueler.

@Cluedrew Most dangerous thinks want you to know they are dangerous? It depends on their motive. Many dangerous things prefer to be overlooked, or underestimated. If something appears dangerous, it could just as easily be a defensive camouflage. Conversely, if something appears safe, it could just as easily be meant to lure you into a false sense of security, or to avoid confrontation until the timing is ideal.

Or it could even be the case that people are imperfect at judging when things are dangerous, and are aware of that and tend to overcompensate in high-stress situations. There are any number of reasons for these characters to view Tobi as a threat.

They don't know (and hopefully won't have a reason to know) that Tobi is a tough cookie. Not only mentally, but also physically. She may be actually the hardest one to kill of them all.

@Pablo360: Well I mean in this context "least dangerous" probably is still pretty dangerous, so there is that.